密码学是关于在存在对手的情况下进行通信的。
Cryptography is about communication in the presence of adversaries.
表演中最重要的是要真实。如果你能假装真实，那你就成功了。
The true measure of our success is how we balance energy needs with environmental responsibility.
真相很少是纯粹的，也从不简单。